a-ak a-ok aaaa aaac aaas aaca aacc aack aaco aacs aaka aaoo aasa aasc aass acaa acac acas acca accc acco accs acks acoa acos acsa acsc acss akaa akao akas akca akka akko akok akos aksa aoca aocs aoks aoss asaa asac asak asao asas asc- asca ascc asco aska asko asks asoc asok asos assa assc assk asso asss caaa caac caas cac- caca cacc cack caco caka caos casa casc cask caso cass ccaa ccac ccas ccca cccc cccs ccoc ccsa ccss ckac ckck ckco ckcs ckoa ckoc ckoo ckos cksa ckso coak coas coca cock coco cok- coka coko cook coos cosa cosc coso coss csaa csac csak csao csas cscc csco cscs cska csks csos cssa k-os kaaa kaak kaas kacc kaco kacs kaka kakc kakk kako kaks kaoa kaoc kaok kaos kas- kasa kasc kask kaso kass kcaa kcac kcas kcca kccc kcck kckc kckk kcko kcos kcsa kcsc kcss kkaa kkac kkck kkco kkcs kkkk kkoa kkoo kksa kkss koac koak koas koca kock kocs koka kokc kokk koko koks kooc kook kooo koos kos- kosa kosc koso koss ksac ksak ksas ksca ksck ksco kscs kska kskk ksko ksks ksoc ksok ksoo ksos kssa ksso ksss oaks oasc oass ocac ocak ocas occa occc ocks ocos ocsa okak okas okka okko okok oksa okso ooaa ooak oooo ooos oosa osak osas osca oscc osco osoo osos ossa osso s-os sa-c saac saak saas saca sacc sack saco sacs saka sakk sako saks saos sasa sasc sask saso sass scaa scac scak scas sccc sccs sck- scok scoo scsa scsc scso skac skss soak soas soca sock soco socs soka sokk soko sook soos sosa soso soss ssaa ssac ssao ssas ssca sscc sscs ssoc sssa sssc ssss